package servlet;

import pojo.Dept;
import service.DeptService;
import service.impl.DeptServiceimpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

@WebServlet(urlPatterns = {"/dept"})
public class DeptServlet extends HttpServlet {
    //创建业务层对象 多态
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        DeptService deptService = new DeptServiceimpl();
        req.setCharacterEncoding("utf-8");
        resp.setCharacterEncoding("utf-8");
        String action = req.getParameter("action");
        if ("dept_list".equals(action)) {
            String name = req.getParameter("dname");
            Dept condition=new Dept(name);
            List<Dept> depts = deptService.findAll(condition);
            req.setAttribute("depts", depts);//此处打断点用Debug启动
            req.setAttribute("condition",condition);
            req.getRequestDispatcher("/dept_list.jsp").forward(req, resp);
        } else if ("delete".equals(action)) {
            String sid = req.getParameter("id");
            int id=Integer.parseInt(sid);
            //根据id查询用户信息
            int result=deptService.deleteDeptById(id);
            if(result>0){
                //重定向,再次查询
                resp.sendRedirect("dept?action=dept_list");
            }
        } else if ("update".equals(action)) {
            String sid=req.getParameter("id");
            int id=Integer.parseInt(sid);
           // int id=Integer.parseInt(req.getParameter("id"));
            //拿到页面传递的参数
            String name = req.getParameter("dname");
            int result=deptService.updateDept(new Dept(id,name));
            //重定向,再次查询
            if(result>0) {
                resp.sendRedirect("dept?action=dept_list");
            }
        } else if ("add".equals(action)) {
            //拿到页面传递的参数
            String dname = req.getParameter("dname");
            int result = deptService.addDept(new Dept(dname));
            //重定向,再次查询
            if(result>0) {
                resp.sendRedirect("dept?action=dept_list");
            }
        } else if ("toupdate".equals(action)) {
            //拿到页面传递的参数
            String sid = req.getParameter("id");
            int id=Integer.parseInt(sid);
            //根据id查询用户信息
            Dept dept=deptService.findById(id);
            //将查询到的用户信息存储到作用域中
            req.setAttribute("dept",dept);
            req.getRequestDispatcher("/update.jsp").forward(req,resp);
        }
    }
}
